The per share amount of a special dividend declared, as of the financial reporting date.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

+ Details

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- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

+ Details

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- Details

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Period Type:

Cash Dividends - Additional Information (Detail) - $ / shares	Jul. 10, 2018	Jul. 11, 2017	Nov. 01, 2016	Jul. 07, 2016
Class of Stock [Line Items]
Dividend payable date, declared day		Jul. 11, 2017	Nov. 01, 2016	Jul. 07, 2016
Annual cash dividend		$ 2.50	$ 2.50	$ 2.50
Subsequent Event [Member]
Class of Stock [Line Items]
Dividend payable date, declared day	Jul. 10, 2018
Special cash dividend	$ 2.00
Annual cash dividend	$ 0.55